Papers Published

1. Wilson, James F., Critical moments in hinge-connected beams subjected to transverse impact loading, International Journal of Impact Engineering, vol. 8 no. 4 (1989), pp. 323 - 329 [0734-743X(89)90021-3] .
   (last updated on 2007/04/09)

   Abstract:
   The dynamic system consists of two uniform, vertical beams, one above the other, with a hinge between them and an anchor hinge at the base. For a transverse load suddenly applied anywhere along the upper beam, the critical or peak moment in the lower beam of length l occurs at a distance y_c = l/ root3 from its base. When this impact load is applied to the lower beam in the neighborhood of the hinge, a primary critical moment always occurs at the impact point; but a secondary critical moment may also occur at a predictable distance y_c < l/ root3 which depends on the relative masses of the two beams.

   Keywords:
   Structural Analysis--Dynamic Response;Materials Testing--Impact;